Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10461391 | Expanded waveguide including multilateral pillars forming multiple channels therein | Chang Hwan Yi | 2019-10-29 |
| 7108788 | On-site treatment method of food waste generated from collective residence or institutional food service facilities | Ho Nam Chang, Do-yun Kim, Chul Hee Ryu, Woo-Gi Lee | 2006-09-19 |